diff options
| author | James Morris <jmorris@namei.org> | 2009-07-14 00:30:40 +1000 |
|---|---|---|
| committer | James Morris <jmorris@namei.org> | 2009-07-14 00:30:40 +1000 |
| commit | 7d45ecafb6792ca68da9517969d37d910601845f (patch) | |
| tree | a98b1074e5577e66a97963745f975404d0aac266 /drivers/usb/serial/generic.c | |
| parent | be940d6279c30a2d7c4e8d1d5435f957f594d66d (diff) | |
| parent | 7638d5322bd89d49e013a03fe2afaeb6d214fabd (diff) | |
Merge branch 'master' into next
Conflicts:
include/linux/personality.h
Use Linus' version.
Signed-off-by: James Morris <jmorris@namei.org>
Diffstat (limited to 'drivers/usb/serial/generic.c')
| -rw-r--r-- | drivers/usb/serial/generic.c | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c index 932d6241b78..ce57f6a32bd 100644 --- a/drivers/usb/serial/generic.c +++ b/drivers/usb/serial/generic.c @@ -424,10 +424,17 @@ static void flush_and_resubmit_read_urb(struct usb_serial_port *port) if (!tty) goto done; - /* Push data to tty */ - for (i = 0; i < urb->actual_length; i++, ch++) { - if (!usb_serial_handle_sysrq_char(port, *ch)) - tty_insert_flip_char(tty, *ch, TTY_NORMAL); + /* The per character mucking around with sysrq path it too slow for + stuff like 3G modems, so shortcircuit it in the 99.9999999% of cases + where the USB serial is not a console anyway */ + if (!port->console || !port->sysrq) + tty_insert_flip_string(tty, ch, urb->actual_length); + else { + /* Push data to tty */ + for (i = 0; i < urb->actual_length; i++, ch++) { + if (!usb_serial_handle_sysrq_char(tty, port, *ch)) + tty_insert_flip_char(tty, *ch, TTY_NORMAL); + } } tty_flip_buffer_push(tty); tty_kref_put(tty); @@ -527,11 +534,12 @@ void usb_serial_generic_unthrottle(struct tty_struct *tty) } } -int usb_serial_handle_sysrq_char(struct usb_serial_port *port, unsigned int ch) +int usb_serial_handle_sysrq_char(struct tty_struct *tty, + struct usb_serial_port *port, unsigned int ch) { if (port->sysrq && port->console) { if (ch && time_before(jiffies, port->sysrq)) { - handle_sysrq(ch, tty_port_tty_get(&port->port)); + handle_sysrq(ch, tty); port->sysrq = 0; return 1; } |